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Opto-electronic and thermoelectric properties of MgIn 2 X 4 (X = S, Se) spinels via ab-initio calculations.
- Source :
-
Journal of molecular graphics & modelling [J Mol Graph Model] 2019 May; Vol. 88, pp. 168-173. Date of Electronic Publication: 2019 Jan 21. - Publication Year :
- 2019
-
Abstract
- The structural behavior of MgIn <subscript>2</subscript> X <subscript>4</subscript> (X = S, Se) has been elaborated by FP-LAPW + lo method as included in the Wien2k code. The stability of the phase has been confirmed by negative formation energy (-1.24 eV for MgIn <subscript>2</subscript> S <subscript>4</subscript> and -0.78 eV for MgIn <subscript>2</subscript> Se <subscript>4</subscript> ). The band gap dependent opto-electronic and thermoelectric properties are realized by modified Becke-Johnson exchange potential. The electronic band gap tuned from ultraviolet to visible (3.1 eV and 1.9 eV) by replacing the S with Se that motivated the studied spinels for photovoltaic and solar applications. Moreover, the attenuation of light, dispersion, transparency, reflection and energy loss when light scattered from material are discussed as function of energy. The thermal conductivity to electrical conductivity ratio, potential gradient and thermal efficiency in the range 0.78-0.80 are elaborated. The comparative study of opto-electronic and thermoelectric properties for energy harvesting increases the potential for optoelectronic than thermoelectric applications.<br /> (Copyright © 2019 Elsevier Inc. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1873-4243
- Volume :
- 88
- Database :
- MEDLINE
- Journal :
- Journal of molecular graphics & modelling
- Publication Type :
- Academic Journal
- Accession number :
- 30708283
- Full Text :
- https://doi.org/10.1016/j.jmgm.2019.01.010